Climate averages 1991–2020
Mahajanga weather
by month.
See how the year changes. October has the highest average daily maximum; June has the lowest average monthly rainfall.
Long-term climate patterns, not a forecast for a particular trip.
Across the year Mahajanga averages a daytime high of 31.4°C and a nighttime low of 23.3°C, with about 1,300 mm of rain on roughly 127 days. October is the warmest month (average high 33.6°C) and January (tied with February) the coolest (29.7°C). January is the wettest month with 431 mm; June is the driest with under 1 mm.
The annual picture
A year in Mahajanga
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Mahajanga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C24.4°C | 24.4°C | 431 | 28.4 | 12.913 h |
| February | 29.7°C24.4°C | 24.4°C | 315 | 24.2 | 12.613 h |
| March | 30.7°C24.6°C | 24.6°C | 197 | 21.0 | 12.212 h |
| April | 31.9°C24.5°C | 24.5°C | 43 | 8.3 | 11.812 h |
| May | 31.8°C23.3°C | 23.3°C | 6.4 | 1.1 | 11.411 h |
| June | 30.6°C21.6°C | 21.6°C | 0.8 | 0.2 | 11.211 h |
| July | 30.3°C20.7°C | 20.7°C | 1.2 | 0.2 | 11.311 h |
| August | 31.3°C20.9°C | 20.9°C | 1.2 | 0.2 | 11.612 h |
| September | 32.6°C21.9°C | 21.9°C | 2.8 | 0.6 | 12.012 h |
| October | 33.6°C23.6°C | 23.6°C | 17 | 4.3 | 12.412 h |
| November | 32.9°C24.5°C | 24.5°C | 80 | 15.0 | 12.813 h |
| December | 31.2°C24.6°C | 24.6°C | 205 | 23.9 | 13.013 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- MamoudzouMayotte · 347 kmHigh 27.2°C · Low 25.1°C · 907 mm rain a year
- AntananarivoMadagascar · 378 kmHigh 23.1°C · Low 13.9°C · 1,030 mm rain a year
- ImerintsiatosikaMadagascar · 378 kmHigh 23.2°C · Low 13.7°C · 1,164 mm rain a year
- ToamasinaMadagascar · 425 kmHigh 25.4°C · Low 21.6°C · 2,260 mm rain a year
- AntalahaMadagascar · 435 kmHigh 27.0°C · Low 22.0°C · 1,536 mm rain a year
- SambavaMadagascar · 444 kmHigh 27.2°C · Low 21.9°C · 1,972 mm rain a year
- AntanifotsyMadagascar · 450 kmHigh 21.2°C · Low 11.5°C · 1,503 mm rain a year
- AntsirabeMadagascar · 468 kmHigh 22.4°C · Low 12.0°C · 1,654 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -15.70°, 46.40° (9 km from the city centre). Rain comes from the 0.25° cell at -15.75°, 46.25°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.